VTV Purifi amp models

I am considering a Purifi amp from VTV. Today I have a pretty high end SET amp (Viva Aurora monos) which I am likely to keep and a set of Tube Research Samson monos (Solid state 300W/8 ohms).  I am driving a pair of Green Mountain Audio C3-HX speakers (92-ish db efficient and first order crossovers) as well as occasionally pair of updated Klipsch Chorus II when I want to rock the house :-)  My questions are as follows: 1) Has anyone tested any of the VTV Purifi amps and if so did you have a chance to compare to other top flight    Class A or AB amps? How do the stack up sonically? I have read great technical things about the Purifi amp from Bruno and others. While I have not tested any Class D amps in my system I have been skeptical that they can deliver the musical goods. 2) In the VTV Purifi line up I can see going with the monoblocks vs the stereo so you get two power supplies instead of one. I am curious if anyone has experience with the monos with the 3000w power supply to know what else it buys you. I would of course opt for the input board that lets me pick different op amps to give me some flexibility in tailoring the sound.
 I know Ric over at EVS is modding these and am not sure if I would go down that path...So my initial interest in thestock performance. Thanks in advance for any insights.